Results 31 to 40 of about 222,002 (330)

Fast negative breakdown in thunderstorms

open access: yesNature Communications, 2019
Recent studies have shown that lightning is initiated by a newly-recognized discharge process called fast positive breakdown. Here, the authors present observational evidence of fast breakdown but of negative polarity, seemingly contrary to current ...
Julia N. Tilles   +8 more
doaj   +1 more source

Comparison of the experimental results with the Langmuir and Freundlich models for copper removal on limestone adsorbent

open access: yesApplied Water Science, 2019
The purpose of this study was to investigate the possibility of the limestone as an adsorbed media and low-cost adsorbent. Batch adsorption studies were conducted to examine the effects of the parameters such as initial metal ion concentration C0 ...
T. Khayyun, A. H. Mseer
semanticscholar   +1 more source

Removal of Copper (II) Ions from Polluted Water Using Modified Wheat Bran

open access: yesEnvironmental and Climate Technologies, 2021
The discharge of wastewater containing heavy metals into waterbodies is a major environmental issue that can influence the quality of the water supply; therefore, it is important to remove the pollutants dangerous to living organisms.
Lomoko Gideon Masedi Nii Ayi   +2 more
doaj   +1 more source

Adsorption isotherms, kinetics and thermodynamic studies of methylene blue dye removal using Raphia taedigera seed activated carbon [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2020
This present work revealed the isotherm, kinetic, and thermodynamic behaviour of methylene blue (MB) dye adsorbed onto acidic activated carbon (AAC) and base activated carbon (BAC) prepared from Raphia taedigera seed by carbonization and chemical ...
Emmanuel F Olasehinde   +2 more
doaj   +1 more source

Adsorption Optimization of Reactive Red 120 Dye from Aqueous Media using Chitosan-Coated Magnetically Nanoparticles [PDF]

open access: yesمحیط زیست و مهندسی آب, 2019
In this study, chitosan-coated magnetically nanoparticles were used to remove the Reactive Red 120 dye from aqueous solution. Chitosan is one of the most famous biological polymers that can be used as adsorbent in the removal of color pollutants ...
Ali Davoudi Rad   +2 more
doaj   +1 more source

Interpreting Charles Lamb’s ‘Neat-Bound Books’

open access: yesStudia Anglica Posnaniensia, 2019
In this paper we consider a much-quoted phrase published by the essayist Charles Lamb (1775–1834) in the London Magazine in 1822 about a desirable quality in books: that they should be ‘strong-backed and neat-bound’. We identify meanings of modifier neat
Wright Laura, Langmuir Christopher
doaj   +1 more source

Investigation on Two Compounds of O,O’-dithiophosphate Derivatives as Corrosion Inhibitors for Q235 Steel in Hydrochloric Acid Solution

open access: yesOpen Chemistry, 2017
In this work, the O,O’-dithiophosphate derivatives of S-4-methylbenzyl-O,O’-di(phenyl) dithiophosphate (Inhi-Ph) and S-4-methyl benzyl-O,O’-di(4-bromophenyl) dithiophosphate (Inhi-BrPh) were synthesized and characterized by elemental analysis, FT-IR, 1H,
Lai Chuan   +7 more
doaj   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska   +7 more
wiley   +1 more source

Atomic oxygen photometric temperature of lightning and its sub-processes with SOPAPILLA

open access: yesScientific Reports
Information on the temperature of lightning sub-processes is crucial to constrain the chemical and energetic impacts of lightning. However, the peer-reviewed literature on even the most energetic of these processes is scant. In this article, we present a
Jacob Wemhoner   +3 more
doaj   +1 more source

Comparing Ocean Surface Boundary Vertical Mixing Schemes Including Langmuir Turbulence

open access: yesJournal of Advances in Modeling Earth Systems, 2019
Six recent Langmuir turbulence parameterization schemes and five traditional schemes are implemented in a common single‐column modeling framework and consistently compared.
Qing Li   +18 more
semanticscholar   +1 more source

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